Esteem, Grand Vitara & Vitara
- Check generator wiring harness electrical connections at generator. Check drive belt tension. See BELT TENSION under ADJUSTMENTS. Ensure battery is fully charged.
- Connect voltmeter between ground and generator "B" (battery) terminal. Connect ammeter positive lead to generator "B" (battery) terminal. Connect ammeter negative lead to positive battery terminal on the battery. See Fig 1 .
- To check generator no-load output, ensure all accessories are off. Start and idle engine. Increase engine speed to 2000 RPM, and note output voltage and output amperage. Output voltage and output amperage should be within specification. See GENERATOR OUTPUT SPECIFICATIONS
table.NOTE: Output voltage may vary slightly depending on temperature of IC voltage regulator case.
- If output voltage and output amperage are within specification, go to step 7 . If output voltage is less than specification, go to next step. If output voltage exceeds specification, check ground on brushes. If ground on brushes is okay, replace IC voltage regulator. See OVERHAUL .
- Shut engine off. Ground generator "F" terminal. See Fig 2 . Start engine and increase engine speed to 2000 RPM. Note output voltage. Output voltage should be within specification. See GENERATOR OUTPUT SPECIFICATIONS table.
- If output voltage now exceeds specification, replace IC voltage regulator. If output voltage is still less than specified, generator is defective. Repair or replace generator as necessary. If repairing generator, see BENCH TESTING .
- To check generator high-load output, allow engine to idle. Increase engine speed to 2000 RPM. Turn on headlights and heater motor. Note output amperage. Output amperage should be within specification. See GENERATOR OUTPUT SPECIFICATIONS table. If output amperage is less than specification, go to next step.
- Repair or replace generator as necessary. If repairing generator, see BENCH TESTING .